Top answers

Solve 5x + 10 = 2x(5x + 10)

First multiply out the right hand side to get5x + 10 = 10x^2 + 20xThen rearrange so everything equals zero, forming a quadratic equation10x^2 + 15x - 10 = 0 To make things easier, you can simplify the equati...
AM
Answered by Amy M. • Maths tutor
4626 Views

Discuss the possible effects that mutation can have on the structure and function of a protein (3 marks)

Mutation can result in changes to a proteins primary, secondary and tertiary structure . Deletion mutations and mutations resulting in a new stop codon can result in the shortening of a protein. Proteins can...
EM
Answered by Emma M. • Biology tutor
8038 Views

Explain a reflex arc

A reflex arc is the nerve pathway which follows a reflex action. First a stimulus, like a pin prick, is detected by receptors in the skin. A sensory neurone then sends electrical impulses to a relay neurone,...
CS
Answered by Clara S. • Biology tutor
12769 Views

Lee este texto de la novela de José Martí, Amistad funesta. Complétalo, escogiendo palabras de la lista A – P en la página siguiente. Escribe la letra de la palabra en la casilla.

A K I G H O L J B P I will show the text during the lesson.
KD
Answered by Kate D. • Spanish tutor
2413 Views

Sketch the function (x^4 + 2x^3 - x -2)/(x+2)

First of all determine the range of the function by looking at its denominator. The function is defined at each point except x=-2 Now to find the zeros of the function first factorise it and equate it to zer...
MD
Answered by Matteo D. • Maths tutor
3508 Views